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Sintering of ultrafine undoped SnO2powder

Authors
Journal
Journal of the European Ceramic Society
0955-2219
Publisher
Elsevier
Publication Date
Volume
21
Issue
5
Identifiers
DOI: 10.1016/s0955-2219(00)00250-8
Keywords
  • Grain Growth
  • Sintering
  • Sno2
  • Surface Diffusion
Disciplines
  • Chemistry
  • Earth Science

Abstract

Abstract The sintering process of nanometric undoped SnO 2 powder was studied. No macroscopic shrinkage was observed during the sintening process. Grain growth kinetics investigation showed that surface diffusion is the dominant mechanism in the temperature range 500–1300°C. For temperatures higher than 1300°C, high weight loss was measured, suggesting evaporation–condensation as the dominant mass-transport mechanism. Thermogravimetric analysis (TG) and mass spectroscopy studies showed that the surface contamination of the SnO 2 particles by chemical species like H 2O, OH − and CO 2, has a strong influence on the role of mass transport controlled by surface diffusion.

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